Home / 764,147.40-1,054,539.90-419,986.68

Finding the Fourth Proportional to 764,147.40, 1,054,539.90 and 419,986.68

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Solution

The fourth proportional to 764,147.40, 1,054,539.90 and 419,986.68 is: 579,590.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,147.40 : 1,054,539.90 = 419,986.68 : x
  2. Step 2: Convert to fraction form
    764,147.40/1,054,539.90 = 419,986.68/x
  3. Step 3: Cross multiply
    764,147.40x = 1,054,539.90 × 419,986.68
  4. Step 4: Simplify right side
    764,147.40x = 442,892,711,528.53
  5. Step 5: Solve for x
    x = 442,892,711,528.53/764,147.40
  6. Step 6: Final answer
    x = 579,590.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.